Method and apparatus for twisting, reeling, and washing freshly spun and spooled artificial-silk thread



July 28, 1925. 1,547,621

R. SINKWITZ METHOD AND APPARATUS FOR TWISTING, REELING, AND- WASHING FRESHLY SPUN AND SPOOLED ARTIFICIAL SILK THREAD Filed Nov. 10, 1925 2 Even to Tr ad lsaumgzel Patented July 28, 1925.

UNITED STATES PATENT OFFICE.

RUDOLF SINKWITZ, OF PIRHA, GERMANY v METHOD AND APPARATUS roarwisrmo, REELING, Ann WASHING ,FRESHLY' SPUN AND SPOOLED ARTIFICIAL-SILK THREAD.

Application filed November 10, 1923. Serial No. 673,902.

To all whom it may concern;

Be it known that I, RUnoLr SINKWITZ, a citizen of theGerman Republic, and a resident of PirnaJSaXonynGermany, have invented certain new and useful Improvements in methods and apparatus for twisting, reeling, and Washing .freshly spun and spooled artificial silk thread, of which the following is a specification.

This invention relates to a method and apparatus for twisting, reeling andwashing freshly spun and spooled artificial silk.

According to the method of the'present invention the artificial silk which has been spooled from the precipitation bath upon a twisting spool is pulled off from this spool, placed on a twisting spindle, without previous treatment, i; e., in an acid condition and reeled directly upon a reeling device dipping and rotating in a water bath.

The immediate reeling of artificial threads from the twisting spools has not been hithe'rto possible on account of the weakness of the-thread which has not been freed of the impurities from the precipitation process. The resistance of the sp-inning spool in its still acid condition against untwisting is increased by the quick rotation of the spool necessary for the twisting, by which the moisture contained in the spool is thrown off by centrifugal action and by the crystallizingout of the salts adhering to the thread. This prevents an easy liberation of the thread from the spool, reduces the tensile and breaking strength of the threads and is the cause of the prevention of an en tire emptying of the spool, thus causing a considerable amount of untwisted threads to remain thereon. I

According to the invention the resistance of the acid thread spool .isbalanced by a continuousmoistening of the twisting spool during its rotation. Thus the crystallizing out of the salts is prevented and an easy separation of the threads from the spool made possible; furthermore'a certain lixiviation is achieved and the tensile and breaking strength is quite apart from the thickening by twisting of the thread, so much increased that the thread, after the twisting operation, may immediately and directly be reeled without the necessity-ofinserting a washing conduit between the twisting device and the reeling device and its further treatment i. e. the complete washing and purifying, bleaching'and drying, may be carried out in the reeled condition of the thread. 1 I f The method is advantageously carried into effect in such a manner that the said thread-spool, placed upon the twisting spindle is caused to rotate in atomized liquid in order to achieve a particularly effective moistening of the spool and of the pulled-ofi' thread.

For carrying the method according'to the invention into effect, a twisting machine combined witha reeling device is used, in which a moistening device, for example 'a liquid atomizer, is arranged in such a manner that the twisting spool is moistened during its rotation, for example, by rotating in the atomized liquid.

An apparatus for carrying into effect the method according to the invention is illustrated diagrammatically and by way of example in the annexed drawings, in which Figs. 1 and 2 show an apparatus for twisting, reeling and washing spooled artificial silk, in cross section and side elevation respectively. -(Fig. 2 is a part section .on the line AB of Fig. 1.)

Journalled in a frame a are twisting spindles '03 carrying twisting spools b. Each twisting spool rotates within a container e.

Arranged above each twisting spool is a thread guide is and a pulling off roller m by means of which the thread is led, with very little tension, to a reeling device t. The twisted threads are guided over glass rods u. The reeling device t dips and rotates partially in a bath aarranged on both sides of the apparatus and along its entire length."

In each of the containers 6' of the twisting spools terminates, at about the middle of the spool, a water pipe f provided at its end with an atomizer g.

The atomizer 9 preferably consists of two nozzles arranged at anadjustable angle, in such a manner that two water jets impact one upon the other, thus causing a specially into good contact with the thread, because during the twisting process each portion of the thread isexposed to the intimate action of the spray-jet for a certain time, and furthermore, each layer of the twisting spool becoming free during the twisting process,

is exposed for some time to the action of i the atomized liquid. There is no difiiculty in. making the' washing combined with the moistening of the twisting spool, so effective, by means of a specially effective atomizing devicethat the thread solely by this 1 moistening, receives sufiicient strength to be 'immediately and directly reeled and to undergo the further lixiviation on device, rotating in a waterbath.

The thread thus washed and twisted is brought directly without the necessity of being led through washing conduits hitherto used to the reeling devices, rotating in waterbaths, so thatthe thread, during its reeling; is further washed.

The feature of the invention does not only consist in the washing of the strands of the reeling reeled up artificial silk whilst upon the reeling device, but also in the combination of the twisting during moistening, which has a double effect, with the immediately follow ing reeling of the thread; the reeling device I for the purpose bf'a final washing of thread rotating in a washing-bath. The double ef feet of moistening the thread upon the twisting spool and. for a furtherperiod after becoming free of the latter consists therein that the spool may be used to the last thread thereon, since the drying out of the thread by shaking is prevented and at the same time the-thread is-alf'eady out and freed of acids by which the directly following reeling and washing inthe reeled condition becomes possi-ble.

aving now particularly described and ascertained the nature of my said invention what I claim as new is 1. A method for twisting, reeling and washing freshly spun and spooled artificial silk, according to which the unpurified threads on a twisting spool carried by a twisting spindle are pulled ofl from the spool Whilst the latter is rotated and moistened, said threads being subsequently direotly reeled without intermediate treatment, washed and further treated in the reeled condition.

2. A method as claimed in claim 1, according device for windingthe threads drawn ofl from the twisting spindle, and means for 'washingthe threads on'the reeling device during movement of the'latter.

5. A machine as claimed in claim 4, wherein said last-namedwashing means include a bath in which thereeling device partially rotates to intermittently dip portions of the threads thereon.

6; The method of treating unpurified, spooled artificialsilk, consisting in moistening and washing the thread simultaneousl with the drawing 011' and twisting thereo and then reeling the thread so twisted and further washing the same.

7. The method of treating -unpurified,

spooled, artificial silk, consisting in moistening the thread on the spool immediately be- .fore or with the drawing ofl' of-the same,

simultaneously twisting the thread as drawn off the spool, reeling the twisted thread, and then giving the reeled thread successive washings in a bath. Y

Signed at Dresden this 22nd day of October 1923.,

RUDO-LF SINKWITZ. 

